<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Flex布局</title>
    <style>
        .father {
            width: 100%;
            height: 60vw;
            background-color: pink;
            /* 需要给父盒子，开启弹性布局 */
            /* 等同于 弄了个 flex 的容器 */
            display: flex;
            /* 默认主轴方向 是横向 */
            /* justify-content: space-between; */
            justify-content: space-evenly;
            /* 统一设置交叉轴 */
            /* align-items: flex-end; */
            align-items: center;
        }
        
        .two {
            /* flex:1 将剩余尺寸分为 1 份，他占 1 份 */
            flex: 1;
        }
        
        .three {
            align-self: flex-start;
            flex: 1;
        }
        
        .one {
            align-self: flex-end;
            flex: 2;
        }
        
        .father div {
            width: 20vw;
            height: 20vw;
            background-color: orange;
            border: 1px black solid;
            box-sizing: border-box;
        }
    </style>
</head>

<body>
    <div class="father">
        <div class="one">1</div>
        <div class="two">2</div>
        <div class="three">3</div>
    </div>
</body>

</html>